Vertical impact crusher adopts impact theory to realize the selective crushing of materials, so the products have good grain in cube shape, and less needle flake. Because of simple structure, less energy consumption, and convenient maintenance, it is commonly used for the primary crushing in the subgrade pavement that required high grade aggregates, it also be used in building material, chemical industry, mining, and metallurgical industry for fine crushing. Its excellent mechanical properties are inseparable with their reasonable and optimize structure. The main structure of vertical crusher include: feeding device, overflow mouth, feeding support device, rotor and crushing cavity, main shaft, and frame etc.
(1) On the working principle, materials are directly crashed mutually, the energy that generates from the mutual strike are passed and transformed between materials, which enhances the utilization of energy, meantime, it also greatly reduces equipment wear degree, extends the service life of the equipment.
(2) The vertical shaft impact crusher can work under the conditions of closed circuit or open circuit. But in order to control the maximum granularity, it needs to operate grading device in closed circuit.
(3) The working mode of vertical impact crusher is that the materials are crushed through mutual impacting, the products grain level do not change with the abrasion of machine parts, so the crushing efficiency keeps stable.
4) The productivity is controlled through motor power, rotor diameter and rotation speed as well as feed speed.
(5) It can be used to crush wet and viscidity materials. Because of the high rotation speed and large impact force, the heat will be generated and passed when the materials crash each other, which has stoving effect on materials. At the meantime, the clearance for passing the materials is large that ensures smoothly transportation in the crushing cavity. Therefore, the crushing capacity of vertical impact crusher is higher than other crushing machine for crushing wet and viscidity materials.
(6) In order to improve the working performance, we can change feed granularity to achieve automatic control.
(7) The machine body forms internal air circuit system, so the pollution for surrounding environment is small. In addition, the kinetic energy of fine particles are small, the crushing possibility is also small, which can avoid the phenomenon of over powder grinding.